We, or rather you, need to be aware that US prices are not reflected by the prices the same items sell for in Europe whether privately or online.
Looking at completed sales on Ebay.co.uk the cheapest reasonable Rolleiflex cameras are Automats around the £80-£100 mark, ($100-$130, €90-€113). £82 for one with a CZJ Tessar (uncoated), £104 with a more desirable Opton Tessar. Anything in this price range tends to have wear, there are cheaper earlier Rolleiflex cameras.
£300 (€340) is the going price for a decent Rolleiflex T, or a later Automat MXV, a 3.5E £500-£700. It's better to be able to see what you're buying with a camera unless the seller is trustworthy.
Ian